Water-heater.



J. ELLIS.

WATER HEATER.

APPLICATION FILED APR.25,1912'.

Patented Feb. 18, 19 13.

2 SHEETS-SHEET 1.

INVEQTOR WITNESSES J ELLIS.

WATBRHEATER. APL'LLOATION FILED APR. 25, 1912.

Patented Feb. 18, 1913.

FIG.4

2 SHEETS-SHEET 2.

.mvzmon s E s s E N n W.

@lllflhl PATEllT tll l lltlfii JOHN Euro, or messen ers, rnunseevanm.

"wa'rnn nniarnn.

Application filed-April. 25, 1812.

r2201 it may concern:

y l" umn that I, Jot-n: Eons, a oit-izeni of lied States residing at- Pittsburgh, in the count of Allegheny and S ate of lcnnsylvania, have invented a new and use ful l HOYQll'IQl'll in vv ater Heaters, of; which improvement the following is a speci-l ica ti i I iv invention relates in particular tothel water and gas controlling mechanism of water hcaters.

The. invention has for its objects; the provis'iion ol single gas controlling valve and mechanism therefor, to take the place of a plurality of gas valves as usually employed; to operate. the gas supply valve to permitv the gas to flow to the burner by the action of the thermostat, when water is drawn from the healer: and to hold the gas valve to its seat h c means of the water valve toprevent the w-ling cll'oct oi the thermostat opening said valve until the hot water faucet is opened to draw water from the heater.

llil'h the ahove obj; ts in, View, the inven- Zion consists in certain novel features of constint-lion, and in certain parts, improvei'nents, and combination cl? parts, as will be l'u'zreinatler more particularly described and pointcd out in the appended claims.

(lne ei'nhodiment of the invention is illustrated in the accompanying drawings, fornr ing a part of this specification, each detail part of the structure being given and retowed to in its individual. reference numeral ghoul the several views, said views rep a following:

a side elevation of the gas and and connecting parts, partly in sect-umw a plan view thereof, also partly in sonionf 9/ is an enlarged, v se tioned side clevationol' the seclover of the thermostat mechanism For operatiug the gas Lie, and an inverted plan of the vrue. Fig. 3 is a side elevation oi a h at-cihavingm} improvement applied hiarclo. Fig. l is modified "form of the water 'e and connection to the gas valve. ln (2 the structure shown comprises a med t the two connected parts i 1:, {.12 interior .-hanibcr being divided conmmnicating by a valve control ed. which cl'iai'nhei: casing is oozmw-b gas line, a& shown in Fig. 3. The amber portion is provided with a nlrolling disk valve l, to engage upon zeal; formed about the communicating Specification of Letters Patent.

upon which 1' Patented Feb. 1a,;ro1e.

Serial No. 693,504.

opening, which valve-has formed on its underside the downwardly extended stem 5 and guides 6, and on itsupper side the upwardly extended stem'il engaging in the guide 7 of the screw cap-= 8, said valve being provided with a seating spring 9, and said screw cap with a st-ufiing box l and stuiling ll. The lower portion of the chamber casing is connected to a horizontally disposed pipe 12 connected in the water service line, and to the thermostat tube 13 inclosed by said'pipe and has arranged therein the then.

mostat rod 1%, which is engaged at one end by the'head of the thermostat tube and has its free end projecting slightly into "the ch amber.

"Within the lower portion of the chamber, is seated a'horizontally disposedand movable thrust-pin 15, having formed thereon the vertically disposed guide portion l5 and supporting portion 15', the point of saidthrust-pin engaging in a small conical opening formed in the-lower face portion of the vertically'dispesedcprimary lever 16. This primary lever issupportedby a vertically disposed rest 17 ,"byengaging with a transversely disposed knife edged fulcrum rib 17', upon the rest, at the! shapedgrooved portion entemling across its rear,- said 111- orun'i point being located at a-pointslightly above "the axial line of the thrust pin. The lever rest 1s provided at lts upper end'wvith a pairof forwardly dlsposed lugs 17", each notched at its rear, and between whichthe upper rounded end of the primary lever extends, the lower rear portion of said rest being further provided: with a transversely disposedfulcrum rib 18 located. at a point slightly below the axial line of the thrust pin. Disposed -b"etween the higs of the lever rest, is a horizontally disposed" secondary lever 19, provided at its rear with laterally projecting fulcriun lugs 19 engaging in the notched portions of the restlugs and fun their engaging, at.- its under transverse portion 20, with the upper end oi. the primary lever, the forward end of this secondary lever having a pocket formed therein within which. arranged a spiral Spring 21' and "s a hcad'ivi hav a stem "23 provided wit a nut :23 for ,djusling the head and placing the spring under the desired tension. lVith-in the lower pm 'on of the rear wall of the chamber arranged a screw plug fl g-engaging the rib 18 ot the lever rest, and provided with a jam nul- Q-l,

rear portion of the chamber for adjusting .the upper end of the rest and secondary lever and secure the rest in adjusted position.

'Rigidly secured upon the vertically dis posed bracket 27 of the gas chamber, casing,

s the water valve casing 28, having a' re movable head 29, and provided with a water inlet 30'and a water'outlet 31 by which it is connectedin the water line lead ng to the heater. Wit-hin this casing forming the Water chamber about the valve seat, is

formed a groove 32, communicating with the water inlet, and at the lower end of the seat is formed a similar groove 33, communieating with the water outlet, said water inlet also communicating with the upper end of the chamber by. a small leakage port 34:. Fitted to travel within this chamber is a piston valve 35, of substantially cup, shape, disposed with its head uppermost, and provided with a plurality of spaced ports 36, and a small leakage port 36', formed through .its annular wall portion. -Extending down through the projecting boss 37 upon the lower end- -of the chamber casing, and throughthe stufiing box 38, and cap is a piston rod 40, having a head 40 at its upper end engaging with the piston valve head, about which rod is arranged a: spiral spring 41 for returning to and holding the piston in its normal elevated position, and at the same time hold the gas valve upon its seat against any opposing action of the thermostat. As here shown, the mechanism interposed between the two valves .for holding the gas valve to its seat, comprising a lever 43 pivotally connected to the bracket 27 by a pivot screw H, one end of said lever ongages aspool bearing 4C2 on the lower end of the. piston. rod of the water valve, and the other end thereof engaging a similar spool bearing uponthe plunger 46 which extends down through the cap 8 of the gas chamber and engages tlfe stem of the gas valve.

Normally, the gas and water valves, and

operating 'parts, assume the positions indirated at Fig. l, the operation thereof in practice 'being as follows Opening the hot Water service faucet of the'heater (not here shown), relieves the pressure of the water upon the underside cit the piston valve 35, thus peirmitting an increased volume of water to enter the upper end of the chamber, by way of the leakage port 34:, the pressure'of'which forces the piston valve to descend .suflicient distance to cause the ports 36 thereof to establish communication with the Water inlet and permit the water to en- 'ter therethrough to and'through the piston to the water outlet-,and heater coils in the line to the service faucet, which downward movement of the piston valve depresses the stem 40 and elevatesthe plunger 4-6, through the medium of the pivoted connecting lever 13, thus releasing the gas'valve 4. Prior to the movement of the water valve, the contraction of the thermostattube 13 having forced the thermostat rod H to move the thrust pin 15, primary lever 16, and secondary lever 19, elevating the free end of the latter into engagement with the gas valve, bywhich movement of the'secondary lever, the spring 21 in the end thereof .wouldhave been depressed, as shown in Fig. 1, but upon the downward movement of the water valve the pressure exerted thereby upon the gas valve being thus removed, the said spring 21 expands and overcomes the spring 9, thus raising the gas valve from its seat and permitting the gas to flow to the-burner. Upon closing the hot water service faucet, the water gradually leaks into the piston, by way of the port 36, the pressure of which, assisted by the spring 4:1, returns the piston to itsnormal elevated position. As the piston valve returns to its normal position, the lever 43 causes the plunger 46 to descend and reengage with the stem of the gas' valve, holding said gas valve to its seat, the pressure exerted by the water valve upon the gas valve being sufiicient to overcome the spring 21, of the secondary lever, when the tem- .perature of the water is low.

rect engagement (normally) with the gas,

valve stem, the spring 51 being suitably held in engagement with the piston and chamber heads. In this modification, the operation would be substantially the same as the preferred form, except that the water valve piston rod releases the gas valve by its upward movement, instead of the downward movement.

Having thus shown and described an operative embodiment of my invention, what I claim, is:

1. In a water heater, the combination of a gas controlling valve, a thermostat mechanism for opening said gas valve, and an automatic water cont-rolling valve provided With a spring adapted to operate on the Water valve and also adapted, when said water valve is in its normal position, to exert pressure upon and hold the gas valve in closed-position.

2. In a water heater, the combination of a gas controlling valve, .a; thermostat mechanism for opening said gas vilve, means for closing said "alve, and an automatic water r and hold the gas valve in closed position.

' in closed position.

cont-rolling valve having therein a springi adapted to operate on the water valve and also adapted, when said water valve is in its normal posit-ion, to exert pressure upon 3. In a water heater, the combination of a gas controlling valve, a yieldable thermostat mechanism for opening said gas valve, and an automatic water controllingvalve provided with a spring adapted to operate on the water valve and also adapted, when said water valve is in its normal position, to exert pressure upon and hold the gas valve in closed position.

4. In a Water heater, the combination of a gas controlling valve, a thermostat mechanism for opening said gas valve, an auto-- matic water controlling valve provided with a spring adapted' to operate on the water valve, and a pivoted gas-valve-holding lever connected to said water valve, said water valve spring also adapted, when said Water valve is in its normal position, to exert pressure upon said lever to hold the gas valve 5. In a water heater, the combination of a gas controlling valve, a thermostat mechanism for opening said gas valve, an automatic water controlling valve provided with it spring adapted to operate'on said water. valve, and a pivoted gas-valve-holding lever connected to said water valve, said Water valve spring also adapted, when said Water valve is in its normal position, to exert pres-' sure upon said lever to hold the gas valve in closed position, and said thermostat mechanism being yieldable to the pressure of the water valve spring acting upon the gas valve in opposition thereto. 3

6. In a water heater, the combination of a gas controlling valve, a thermostat mechanism for opening the gas valve, an automatic water controlling valve, a rod mov-- able therewith, and a pivoted gas-valveholding lever positively connected to said rod for holding the gas valve to its seat when said water valve is in its normal position.

7. In a water heater, the combination of a gas controlling valve, a thermostat mechanism for opening the gas valve, an automatic water controlling valve, a rod movable therewith, and a pivoted gas-valve-holding lever positively connected to said rod for holding the gas valve to its seat when said water valve is in its normal position, said thermostat mechanism being yieldable to the pressnre 'of the water valve exerted upon the gas valve in opposition thereto.

8. In a water heater, the combination of a gas chamber, a gas controlling valve therein provided with a seating spring, a tliernm stat tube connected to said chamber, a thermostat rod inclosed by said tube and pro jecting into said chamber, means in said chamber operated by the thermostat con trolled rod for opening the gas valve, an automatic water *alve, a rod operating with g said water valve, a pivoted lever operated by said water valve rod and provided with a plunger for holding the gas valve to its seat to prevent the opening of the same by the thermostat mechanisn'i until water is drawn from the heater, and screws extending through the. chamber for adjusting the thern'iostat gas valve opening means.

9. In a water heater, the eombinatiiin of a gas chamber, a gas controlling valve therein provided with a seating spring, a thermostat tube connected to said chamber, a thermostat rod inclosed by said tube and projectinginto said chamber, means in said chamber operated upon by the thermostat controlled rod for opening the gas valve, an

automatic water controlling valve, a rod operating with said water valve, and a pivoted leveroperating with said rod and provided with a plunger for holding the gas valve to the, seat to prevent the opening thereof by tliethermostat mechanism until water is drawn from the heater, the thermostat gas operating mechanism being yield; able to the pressure exerted by the gas valve holding mechanism.

10. In a water heater, the combination of a gas chamber, a gas controlling valve therein provided with a seating spring, a thermostat tube connected tosaid chamber, a thermostat rod inclosed by said tube and pro jecting into said chamber, means in said chamber operated 'by the thermostat controlled rod for opening the gas valve, an automatic watervalve, a rod operating with said water valve, a pivoted lever operating with said water valve rod and provided with a plunger for holding the gas valve to its seat to prevent the opening thereof by the thermostat mechanism until water is drawn from the heater, and screws extending through the gas chamber for adjusting the thermostat gas valve opening means, said thermostat gas valve operating means being yieldable to the pressure exerted on the gas valve by the holding means.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnes'ses.

JOHNELLIS.

In presence of- Jno. P. Rnmnoxn, R. S. HARRISON.

Copies at th i'spatent may be obtained for five cents each, by addressing the Commissioner of Patentu,

Washington, D. 0. 

